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5c8aa950fe
source addition. Apparently the buildbots were wrong about failures. --- Add some switches helpful for debugging: -print-before=<Pass Name> Dump IR before running pass <Pass Name>. -print-before-all Dump IR before running each pass. -print-after-all Dump IR after running each pass. These are helpful when tracking down a miscompilation. It is easy to get IR dumps and do diffs on them, etc. To make this work well, add a new getPrinterPass API to Pass so that each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass suitable for dumping out the kind of object the Pass works on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100249 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
//===--- VMCore/PrintModulePass.cpp - Module/Function Printer -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// PrintModulePass and PrintFunctionPass implementations.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Assembly/PrintModulePass.h"
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#include "llvm/Function.h"
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#include "llvm/Module.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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class PrintModulePass : public ModulePass {
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std::string Banner;
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raw_ostream *Out; // raw_ostream to print on
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bool DeleteStream; // Delete the ostream in our dtor?
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public:
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static char ID;
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PrintModulePass() : ModulePass(&ID), Out(&dbgs()),
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DeleteStream(false) {}
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PrintModulePass(const std::string &B, raw_ostream *o, bool DS)
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: ModulePass(&ID), Banner(B), Out(o), DeleteStream(DS) {}
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~PrintModulePass() {
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if (DeleteStream) delete Out;
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}
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bool runOnModule(Module &M) {
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(*Out) << Banner << M;
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return false;
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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};
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class PrintFunctionPass : public FunctionPass {
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std::string Banner; // String to print before each function
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raw_ostream *Out; // raw_ostream to print on
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bool DeleteStream; // Delete the ostream in our dtor?
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public:
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static char ID;
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PrintFunctionPass() : FunctionPass(&ID), Banner(""), Out(&dbgs()),
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DeleteStream(false) {}
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PrintFunctionPass(const std::string &B, raw_ostream *o, bool DS)
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: FunctionPass(&ID), Banner(B), Out(o), DeleteStream(DS) {}
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inline ~PrintFunctionPass() {
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if (DeleteStream) delete Out;
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}
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// runOnFunction - This pass just prints a banner followed by the
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// function as it's processed.
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//
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bool runOnFunction(Function &F) {
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(*Out) << Banner << static_cast<Value&>(F);
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return false;
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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};
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}
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char PrintModulePass::ID = 0;
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static RegisterPass<PrintModulePass>
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X("print-module", "Print module to stderr");
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char PrintFunctionPass::ID = 0;
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static RegisterPass<PrintFunctionPass>
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Y("print-function","Print function to stderr");
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/// createPrintModulePass - Create and return a pass that writes the
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/// module to the specified raw_ostream.
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ModulePass *llvm::createPrintModulePass(llvm::raw_ostream *OS,
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bool DeleteStream,
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const std::string &Banner) {
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return new PrintModulePass(Banner, OS, DeleteStream);
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}
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/// createPrintFunctionPass - Create and return a pass that prints
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/// functions to the specified raw_ostream as they are processed.
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FunctionPass *llvm::createPrintFunctionPass(const std::string &Banner,
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llvm::raw_ostream *OS,
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bool DeleteStream) {
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return new PrintFunctionPass(Banner, OS, DeleteStream);
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}
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